The dissertation carried out the comprehensive interdisciplinary conceptualization of correlation between secular and postsecular in modern religiosity dynamics - through the integrity of the methodological tools of both philosophical and religious studies, and theological science through the prism of modeling of the conditions for effective synergy of philosophical and theological, secular-humanitarian and religious intentions in ideological, theoretical, doctrinal and praxeological contexts of religiosity. The dissertant concludes that postsecularity is a state of worldview value self-determination in the broad sense of this concept (both at the level of consciousness and at the level of life practice), when almost the same rights (and real possibilities for their implementation) are acquired in society and culture both secular and religious types of functioning of institutions, arrangement of the personal life of the individual and society. The emergence of such a modern state of religiosity in the ideological plan was made possible thanks to the logic of the deployment of philosophical and theological discourse that showed the Christian system of the world attuned to the ideological rationalization of religiosity, to the synthesis of philosophical-secular and religious-church motives of religious practice, as well as to blur the boundaries between only socially conditioned and sacred doctrine in substantiating the concept of norm. The inner theological types of secularization of religion and religiosity (rationalized religiosity, irrationalized religiosity, reformed religiosity, etc.) are substantiated through a demonstration of ways to rationalize faith in the scholastic tradition, philosophy of religion and religious philosophy of the New Time and XIX-XX centuries, the creation of new Christian trends and the formation of their theology - due to the influence of the synergistic action of personal, cultural, historical, social factors and internal confessional motivations. It has been demonstrated that secularity acts as a product not only of the struggle "against the influence of the Church", but also of the "struggle" for the relevance of the Church, internal religious value and social competition (Reformation), etc. Postsecularity, therefore, in the theological discourse takes on signs of a "another" secularity , where the last of the currently known types of secularization of religiosity are updated - globalized religiosity. It has been established that in the Ukrainian religious environment, through the diagnosis of the social, cultural and social sphere, it is possible to trace the effectiveness of the principle of effective synergy of theological and philosophical, humanitarian-secular and religious-faith factors in the postsecular arrangement of life and religious practice. First of all, this concerns the sphere of education, the social activity of churches, the personal socialization of believers, etc.
